Emerson Figure i manual General System Charge Requirements, Evaporator Charge Levels

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Installation

2.5.6General System Charge Requirements

Liebert split system units are designed with quick-connect fittings and are factory-charged to proper levels. Due to the wide range of operating ambients and sensitivity of the system components to charge level, the system charge must be maintained at recommended levels.

If there is any doubt that the system has the correct refrigerant charge level, the correct procedure is to remove the entire system charge, evacuate the system and weigh in the recommended factory charge total for both units and any line sets or field piping.

Tables 7, 8, 11 and 12 are included for field piping allowances, condensing unit charges, line sets and evaporator charges.

Total refrigerant charge = evaporator + lines + condensing unit

NOTE

All condensing units and most evaporator units are fully charged with refrigerant. Some evaporator units are shipped from the factory with a nitrogen holding charge only. (Refer to evaporator serial tags.) If field-supplied refrigerant piping is installed, refrigerant must be added to the system. Refer to Figure 12 for field-supplied piping guidelines.

Table 12 Evaporator Charge Levels

	Evaporator	Charge R-407C
Indoor Unit	Models	oz (kg)
	MMD11/12E	3 (0.085)

	MMD17/18E	4 (0.113)

Liebert	MMD23/24E	7 (0.198)
Mini-Mate2	MMD35/36E	7 (0.198)

	MMD59/60E	4 (0.113)

	MMD95/96E	7 (0.198) each circuit

	DME020E	4 (0.113)

Liebert DataMate	DME027E	5 (0.141)

	DME037E	6.5 (0.184)

Liebert Challenger	BF/BU036E	9 (0.255)
3000	BF/BU060E*	13 (0.368)

*Evaporator is charged with nitrogen at the factory

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Contents Liebert Prop Fan Condensing Unit Example PFH037A-PL7 = 380/415-3ph-50HzTable of Contents Figures Prop Fan Condensing Units Optional EquipmentEquipment Inspection Location ConsiderationsDimensional Data Net WeightModel Numbers Dimensional Data, in. mm Lb. kg 60Hz 50Hz Cabinet and floor planning data, horizontal air dischargeFootprint Dimensions Wall Mounting Piping and Electrical Connections Electrical and piping connections, horizontal air discharge152 PFH096A- LGeneral piping arrangement Electrical field connections, 1- to 5-ton units Top Air Discharge ModelsElectrical field connections, 8-ton units Single-phase, 1-3 ton model schematic, typical Three-phase, 3-5 ton model schematic, typical Three-phase, 8 ton model schematic, typical Piping Considerations Piping for Elevation Differences between PFH and EvaporatorEvaporator Condensing UnitEquivalent lengths for various pipe fittings, ft m Pre-Charged Line Sets Field-Fabricated Line SetsRefrigerant charge in Liebert pre-charged R-407C line sets Line Size Length Charge R-407C Ft. m Lb-oz kgLiebert PFH unit charge levels and coupling size Recommended line sizes, OD CuInstallation of Piping to Units Piping connection sizes and torqueLine charges refrigerant per 100 ft m of Type L copper tube Line Size OD Cu Coupling Size Torque, lb-ft. N-mFilter Drier Selection and Installation Install the New Condensing UnitRemove Existing Condensing Unit General System Charge Requirements Evaporator Charge LevelsEvaporator Charge R-407C Indoor Unit Models Oz kg Low-Voltage Control Wire Connections Low-Voltage Control Wire SizingElectrical Connections Nominal Input Voltage- Phase Capacity Electrical Nominal Input Voltage-Phase Capacity ElectricalElectrical Data Electrical data-High ambient models 105F/41C 60HzElectrical data-Quiet-Line models 95F/35C 60Hz Electrical data-High ambient models 105F/41C 50HzChecklist for Completed Installation Electrical data Quiet-Line models 95F/35C 50HzCompressor High Head PressureLiebert Lee-Temp Flood Back Head Pressure Control Adjustment Hot Gas BypassOperation Hot gas bypass diagram General Compressor FailureElectrical Failure-Burnout Mechanical FailureCompressor Replacement Field Charge Verification Field verification chargeModel Numbers 407C 60 Hz 50 Hz Oz kg Troubleshooting Problem Cause RemedySingle-Phase&Three-Phase UPS Environmental Systems Web Site MonitoringUni Etwo